I went through a similar situation with boots a few years ago and I totally feel you on the frustration. You are expected to make a decision on whether a boot will work or not by walking around in your house and "not getting them dirty". Crazy. However, I finally settled on Schnees with Lathrop...
I've had AC joint problems in the past. If rest isn't helping, I would strongly suggest seeing a sports medicine physician. It does not have to be a surgeon. There are non-operative sports medicine physicians that can 1) take x-rays to confirm the pathology (don't need an MRI for something like...
Agree with the others. Unusual that you wouldn't see a "popeye" deformity or bruising, but if you have pain or weakness with the movements you're describing, in the area you're describing, you want to get that taken care of sooner rather than later. The repair failure rate increases the further...